of dansyrlle



Gnof e. Fisk, oiDANslyILL, Niiwlfork.

nevica Foa' \criadov'me` sortais.

` "Spcification ofjetters Patent dated IAniguslt ville, Livingston count-y, New "York, invented new andpvuseful Impr Machinery for `Pltining, frofiguing, Grooving Boards. p i

In the annexed drawings Figure l is a longitudinal section ofa planing machine embodying my improvements. WFigs. 2 and and 3 are two different forms of bit bed plates.`

Figs. 4 and 5 are the corresponding clamps. Fig. 6 is a detached view of the excavator.

(a) is a bench.

(ZJ) are feed rollers, of which thelower ones revolve on a stationary axis, and the upper ones press down on the board by dint of weights (c), connected by the yoke (el) with a cross-beam (e) which being acted upon by screws (f), affords a means of limiting the descent of the roller.

(g) is a disk cutter of usual form,ad justable in height by set screw (it). l

The range of rollers are set in a box frame (j) which is capable of slight vertical adjustment by means similar to those de- 4 scribed in reference to the other rollers. I/Vithin this box are fixed the stocks of jointing bits (Z). These stocks Vare faced on their upper side by plates (m), the slight rabbet (n) toward the lower edge of which forms the bedfor the bit to lie in. 'Ihese plates are shown by: front view in Figs. 2 and 3 exhibiting slight variations of one general plan. `(0) are apertures in these plates for the reception of hooks (p) on the under side of clamps (10'). These hooks being inserted within the apertures in the plates, and then pushed downward, interlock withthe plate and serve as a fulcrum for the clamps to bear upon. Screws (g) at the top of the clamp, bearing against the face of the plate, press o-ut the upper portion ofthe clamp and by this means press its lower edge against the bit, which is t-hus held down rmly upon the stock.

In order to adjust and hold the bits to the proper depth for cutting rods (7') having lips which bear against, the back edge of the bit, are acted on at their upper end by screws (s) in the top of the stock. By

Y means of these screws, the cutting edge of the bit is both advanced and held to its `proper depth and adjusted in reference to squareness, so as to cut parallel to the under side of -the board. By means of this `arp i rangement of clarnpfand sets crelv'v's the. Be itknowntliatIl, G. C. Fisk, of Dans-` have eiits in ess of resetting the knives, which def mands so fmuch timel and ,care,`. `is ,A `niiaterially have seen in use.

(t) are circular saws for cutting the back faces of the tongue rabbets. These saws are hung in stocks (u) `which are capable of a slight horizontal vibration about a vertical shaft (fu), which journals within standards (w), rising from a bed plate which plate is capable ofslight vertical vibratonof its rear edge, and is hung to a shaft (y) which journals in lugs (a) on the bench. The rear edge of this bed plate is supported by set screws (l) resting upon a bar (2) which stretches across the frame. This enables the adjust-ment of the height or the saws with reference to the rollers.

The parallelism of each vertical saw with the path of the board is maintained by a pair of set and tightening screws (3), one pair to each saw. The distance apart of these saws, is regulated by a pair of leader and follower nuts (4) to each saw.

(5) are horizontal saws for cutting `the sides of the tongue or groove as the case may be, being duplicated, one set on each side; these are held to their shafts in arallel pairs by a set of collars, one (6) between the pair of saws holding them the proper distance asunder for forming the tongue, and the others (7 and 8) one (7 above the upper saw and the other (8) below the lower saw, a nut (9) binding all together. The height of these last saws is adjustable by `means of set screws, which support the lower ends of their shafts. These saws may be made in a number of segmental pieces, so as to increase or diminish their diameter, by simply placing eachsegment a greater or less distance from the center.

The saws which form the groove are arranged precisely like those described for the tongue. The object of these saws is to forni wit-h the least practicable expenditure of power, the sides of the tongue and tongue rabbets and the horizontal sides of the groove and have only so `much thickness given them as is necessaryto thelr lateral stiffness, and in this respect differ -from cutters which being of the breadth of the piece to be removed, perform their duty by means of a' succession of chips. The strip formed by the grooving saws is removed by a simple but effectual device Which I call the excavator, consisting of a bit (10) formed of a thin strip of steel bentl What I claim therein as new and desire to secure by Letters Patent is: Y

The excavator or bit 10 constructed substantially as described in connection With rotary saws for tonguing and groovng boards at the-same time that their surfaces are planed as above set forth and for such analogous purposes as it may be applied.

In testimony whereof I have hereunto set .my handQ before two subscribing Witnesses.

GEORGE C. FISK. v

Witnesses Y GERTHORN 'BULKLEY, HUGH MCCARTNEY. 

